210472306405 has 8 divisors (see below), whose sum is σ = 253875404952. Its totient is φ = 167505420288.

The previous prime is 210472306397. The next prime is 210472306411. The reversal of 210472306405 is 504603274012.

It can be written as a sum of positive squares in 4 ways, for example, as 58371526404 + 152100780001 = 241602^2 + 390001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210472306405 - 2³ = 210472306397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109052044 + ... + 109053973.

It is an arithmetic number, because the mean of its divisors is an integer number (31734425619).

Almost surely, 2^210472306405 is an apocalyptic number.

It is an amenable number.

210472306405 is a deficient number, since it is larger than the sum of its proper divisors (43403098547).

210472306405 is a wasteful number, since it uses less digits than its factorization.

210472306405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218106215.

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 210472306405 in words is "two hundred ten billion, four hundred seventy-two million, three hundred six thousand, four hundred five".